PT-2020-18519 · Mitsubishi · Melqic Iu1 Series

Published 2020-03-16 · Updated 2020-03-19 · CVE-2020-5544

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Mitsubishi Electric MELQIC IU1 series IU1-1M20-D version 1.0.7 and earlier

Description A Null Pointer Dereference issue in the TCP function of the firmware allows remote attackers to stop network functions or execute malware by sending a specially crafted packet.

Recommendations For Mitsubishi Electric MELQIC IU1 series IU1-1M20-D version 1.0.7 and earlier, update to a version later than 1.0.7 to resolve the issue. As a temporary workaround, consider restricting access to the network to minimize the risk of exploitation.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2020-5544

Affected Products

Melqic Iu1 Series

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-5544 · Security Note
• https://mitsubishielectric.co.jp/psirt/vulnerability/pdf/2019-004.pdf · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-5544 · Vendor Advisory
• https://t.me/cvenotify/1724 · Telegram Post
• https://jvn.jp/en/vu/JVNVU92370624/index.html · Note